1 | <?xml version="1.0" encoding="ISO-8859-1"?>
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2 | <!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
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3 | "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
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4 | <!ENTITY % general-entities SYSTEM "../../general.ent">
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5 | %general-entities;
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6 | ]>
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7 |
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8 | <sect1 id="ch-system-gcc" role="wrap">
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9 | <?dbhtml filename="gcc.html"?>
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10 |
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11 | <title>GCC-&gcc-version;</title>
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12 |
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13 | <indexterm zone="ch-system-gcc">
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14 | <primary sortas="a-GCC">GCC</primary>
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15 | </indexterm>
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16 |
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17 | <sect2 role="package">
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18 | <title/>
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19 |
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20 | <para>The GCC package contains the GNU compiler collection, which includes
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21 | the C and C++ compilers.</para>
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22 |
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23 | </sect2>
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24 |
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25 | <sect2 role="installation">
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26 | <title>Installation of GCC</title>
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27 |
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28 | <para os="p1">The following patch contains a number of updates to the
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29 | &gcc-version; branch by the GCC developers:</para>
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30 |
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31 | <screen os="p2"><userinput>patch -Np1 -i ../&gcc-branch_update-patch;</userinput></screen>
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32 |
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33 | <para os="fix1">Apply a <command>sed</command> subsitution that will
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34 | suppress the execution of the <command>fixincludes</command> script:</para>
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35 |
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36 | <screen os="fix2"><userinput>sed -i 's@\./fixinc\.sh@-c true@' gcc/Makefile.in</userinput></screen>
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37 |
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38 | <para os="f">The GCC documentation recommends building GCC outside of the source
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39 | directory in a dedicated build directory:</para>
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40 |
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41 | <screen os="g"><userinput>mkdir -v ../gcc-build
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42 | cd ../gcc-build</userinput></screen>
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43 |
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44 | <para os="h">Prepare GCC for compilation:</para>
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45 |
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46 | <screen os="i"><userinput>SED=sed CC="gcc -isystem /usr/include" \
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47 | CXX="g++ -isystem /usr/include" \
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48 | LDFLAGS="-Wl,-rpath-link,/usr/lib:/lib" \
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49 | ../gcc-&gcc-version;/configure --prefix=/usr \
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50 | --libexecdir=/usr/lib --enable-shared --enable-threads=posix \
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51 | --enable-__cxa_atexit --enable-c99 --enable-long-long \
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52 | --enable-clocale=gnu --enable-languages=c,c++ \
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53 | --disable-multilib --disable-libstdcxx-pch \
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54 | --with-system-zlib --enable-checking=release --enable-libstdcxx-time</userinput></screen>
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55 |
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56 | <variablelist os="i1">
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57 | <title>The meaning of the new configure option:</title>
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58 |
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59 | <varlistentry>
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60 | <term><parameter>SED=sed</parameter></term>
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61 | <listitem>
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62 | <para>This prevents a hard-coded path to
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63 | <filename>/tools/bin/sed</filename> in the <command>fixincl</command>
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64 | program.</para>
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65 | </listitem>
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66 | </varlistentry>
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67 |
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68 | </variablelist>
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69 |
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70 | <para os="j">Compile the package:</para>
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71 |
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72 | <screen os="k"><userinput>make</userinput></screen>
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73 |
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74 | <important os="l">
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75 | <para>The test suite for GCC is considered
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76 | critical. Do not skip it under any circumstance.</para>
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77 | </important>
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78 |
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79 | <para os="s1">Increase the stack size prior to running the tests:</para>
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80 |
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81 | <screen os="s2"><userinput remap="test">ulimit -s 32768</userinput></screen>
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82 |
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83 | <para os="m">Test the results, but do not stop at errors:</para>
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84 |
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85 | <screen os="n"><userinput remap="test">make -k check</userinput></screen>
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86 |
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87 | <para os="o">The <parameter>-k</parameter> flag is used to make the test suite
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88 | run through to completion and not stop at the first failure. The GCC test
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89 | suite is very comprehensive and is almost guaranteed to generate a few
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90 | failures. To receive a summary of the test suite results, run:</para>
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91 |
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92 | <screen os="p"><userinput remap="test">../gcc-&gcc-version;/contrib/test_summary</userinput></screen>
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93 |
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94 | <para os="q">For only the summaries, pipe the output through
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95 | <userinput>grep -A7 Summ</userinput>.</para>
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96 |
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97 | <para os="r">A few unexpected failures cannot always be avoided. The
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98 | GCC developers are usually aware of these issues, but have not
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99 | resolved them yet.</para>
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100 |
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101 | <para os="s">Install the package:</para>
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102 |
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103 | <screen os="t"><userinput>make install</userinput></screen>
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104 |
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105 | <para os="u">Install the <filename class="headerfile">libiberty</filename> header
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106 | file that is needed by some packages:</para>
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107 |
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108 | <screen os="v"><userinput>cp -v ../gcc-&gcc-version;/include/libiberty.h /usr/include</userinput></screen>
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109 |
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110 | <para os="w">Some packages expect the C preprocessor to be installed in the
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111 | <filename class="directory">/lib</filename> directory.
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112 | To support those packages, create this symlink:</para>
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113 |
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114 | <screen os="x"><userinput>ln -sv ../usr/bin/cpp /lib</userinput></screen>
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115 |
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116 | <para os="y">Many packages use the name <command>cc</command> to call the C
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117 | compiler. To satisfy those packages, create a symlink:</para>
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118 |
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119 | <screen os="z"><userinput>ln -sv gcc /usr/bin/cc</userinput></screen>
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120 |
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121 | <para os="aa">Finally, move a misplaced file:</para>
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122 |
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123 | <screen os="ab"><userinput>mv -v /usr/lib/libstdc++*gdb.py /usr/share/gdb/auto-load/usr/lib</userinput></screen>
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124 |
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125 | </sect2>
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126 |
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127 | <sect2 id="contents-gcc" role="content">
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128 | <title>Contents of GCC</title>
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129 |
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130 | <segmentedlist>
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131 | <segtitle>Installed programs</segtitle>
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132 | <segtitle>Installed libraries</segtitle>
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133 | <segtitle>Installed directories</segtitle>
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134 |
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135 | <seglistitem>
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136 | <seg>c++, cc (link to gcc), cpp, g++, gcc, gcov</seg>
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137 | <seg>libasan.[a,so], libatomic.[a,so], libgcc.a, libgcc_eh.a, libgcc_s.so, libgcov.a,
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138 | libgomp.[a,so], libiberty.a, libitm.[a,so], liblto_plugin.so, libmudflap.[a,so], libmudflapth.[a,so],
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139 | libquadmath.[a,so], libssp.[a,so], libssp_nonshared.a, libstdc++.[a,so], libsupc++.a,
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140 | libtsan.[a,so]</seg>
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141 | <seg>/usr/include/c++, /usr/lib/gcc, /usr/share/gcc-&gcc-version;</seg>
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142 | </seglistitem>
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143 | </segmentedlist>
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144 |
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145 | <variablelist>
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146 | <bridgehead renderas="sect3">Short Descriptions</bridgehead>
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147 | <?dbfo list-presentation="list"?>
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148 | <?dbhtml list-presentation="table"?>
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149 |
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150 | <varlistentry id="cc">
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151 | <term><command>cc</command></term>
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152 | <listitem>
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153 | <para>The C compiler</para>
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154 | <indexterm zone="ch-system-gcc cc">
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155 | <primary sortas="b-cc">cc</primary>
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156 | </indexterm>
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157 | </listitem>
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158 | </varlistentry>
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159 |
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160 | <varlistentry id="cpp">
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161 | <term><command>cpp</command></term>
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162 | <listitem>
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163 | <para>The C preprocessor; it is used by the compiler to expand the
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164 | #include, #define, and similar statements in the source files</para>
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165 | <indexterm zone="ch-system-gcc cpp">
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166 | <primary sortas="b-cpp">cpp</primary>
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167 | </indexterm>
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168 | </listitem>
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169 | </varlistentry>
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170 |
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171 | <varlistentry id="c">
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172 | <term><command>c++</command></term>
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173 | <listitem>
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174 | <para>The C++ compiler</para>
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175 | <indexterm zone="ch-system-gcc c">
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176 | <primary sortas="b-c++">c++</primary>
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177 | </indexterm>
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178 | </listitem>
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179 | </varlistentry>
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180 |
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181 | <varlistentry id="g">
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182 | <term><command>g++</command></term>
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183 | <listitem>
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184 | <para>The C++ compiler</para>
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185 | <indexterm zone="ch-system-gcc g">
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186 | <primary sortas="b-g++">g++</primary>
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187 | </indexterm>
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188 | </listitem>
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189 | </varlistentry>
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190 |
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191 | <varlistentry id="gcc">
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192 | <term><command>gcc</command></term>
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193 | <listitem>
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194 | <para>The C compiler</para>
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195 | <indexterm zone="ch-system-gcc gcc">
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196 | <primary sortas="b-gcc">gcc</primary>
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197 | </indexterm>
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198 | </listitem>
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199 | </varlistentry>
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200 |
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201 | <varlistentry id="gcov">
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202 | <term><command>gcov</command></term>
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203 | <listitem>
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204 | <para>A coverage testing tool; it is used to analyze programs to
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205 | determine where optimizations will have the most effect</para>
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206 | <indexterm zone="ch-system-gcc gcov">
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207 | <primary sortas="b-gcov">gcov</primary>
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208 | </indexterm>
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209 | </listitem>
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210 | </varlistentry>
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211 |
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212 | <varlistentry id="libasan">
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213 | <term><filename class="libraryfile">libasan</filename></term>
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214 | <listitem>
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215 | <para>The Address Sanitizer runtime library</para>
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216 | <indexterm zone="ch-system-gcc libasan">
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217 | <primary sortas="c-libasan">libasan</primary>
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218 | </indexterm>
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219 | </listitem>
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220 | </varlistentry>
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221 |
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222 | <varlistentry id="libatomic">
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223 | <term><filename class="libraryfile">libatomic</filename></term>
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224 | <listitem>
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225 | <para>A GCC support runtime library for atomic operations not
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226 | supported by hardware</para>
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227 | <indexterm zone="ch-system-gcc libatomic">
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228 | <primary sortas="c-libatomic*">libatomic*</primary>
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229 | </indexterm>
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230 | </listitem>
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231 | </varlistentry>
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232 |
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233 | <varlistentry id="libgcc">
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234 | <term><filename class="libraryfile">libgcc</filename></term>
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235 | <listitem>
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236 | <para>Contains run-time support for <command>gcc</command></para>
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237 | <indexterm zone="ch-system-gcc libgcc">
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238 | <primary sortas="c-libgcc*">libgcc*</primary>
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239 | </indexterm>
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240 | </listitem>
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241 | </varlistentry>
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242 |
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243 | <varlistentry id="libgcov">
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244 | <term><filename class="libraryfile">libgcov</filename></term>
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245 | <listitem>
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246 | <para>Library that is linked into a program when
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247 | <command>gcc</command> is instructed to enable profiling</para>
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248 | <indexterm zone="ch-system-gcc libgcov">
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249 | <primary sortas="c-libgcov">libgcov</primary>
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250 | </indexterm>
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251 | </listitem>
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252 | </varlistentry>
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253 |
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254 | <varlistentry id="libgomp">
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255 | <term><filename class="libraryfile">libgomp</filename></term>
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256 | <listitem>
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257 | <para>GNU implementation of the OpenMP API for multi-platform
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258 | shared-memory parallel programming in C/C++ and Fortran</para>
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259 | <indexterm zone="ch-system-gcc libgomp">
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260 | <primary sortas="c-libgomp">libgomp</primary>
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261 | </indexterm>
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262 | </listitem>
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263 | </varlistentry>
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264 |
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265 | <varlistentry id="libiberty">
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266 | <term><filename class="libraryfile">libiberty</filename></term>
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267 | <listitem>
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268 | <para>Contains routines used by various GNU programs, including
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269 | <command>getopt</command>, <command>obstack</command>,
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270 | <command>strerror</command>, <command>strtol</command>, and
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271 | <command>strtoul</command></para>
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272 | <indexterm zone="ch-system-gcc libiberty">
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273 | <primary sortas="c-libiberty">libiberty</primary>
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274 | </indexterm>
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275 | </listitem>
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276 | </varlistentry>
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277 |
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278 | <varlistentry id="libitm">
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279 | <term><filename class="libraryfile">libitm</filename></term>
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280 | <listitem>
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281 | <para>The GNU Transactional Memory Library, which provides
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282 | transaction support for accesses to a process's memory</para>
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283 | <indexterm zone="ch-system-gcc libitm">
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284 | <primary sortas="c-libitm*">libitm*</primary>
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285 | </indexterm>
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286 | </listitem>
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287 | </varlistentry>
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288 |
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289 | <varlistentry id="liblto_plugin">
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290 | <term><filename class="libraryfile">liblto_plugin</filename></term>
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291 | <listitem>
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292 | <para>Runtime library for GCC's link-time optimization plugin</para>
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293 | <indexterm zone="ch-system-gcc liblto_plugin">
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294 | <primary sortas="c-liblto_plugin">liblto_plugin</primary>
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295 | </indexterm>
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296 | </listitem>
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297 | </varlistentry>
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298 |
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299 | <varlistentry id="libmudflap">
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300 | <term><filename class="libraryfile">libmudflap</filename></term>
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301 | <listitem>
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302 | <para>The libmudflap libraries are used by GCC for instrumenting
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303 | pointer and array dereferencing operations.</para>
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304 | <indexterm zone="ch-system-gcc libmudflap">
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305 | <primary sortas="c-libmudflap*">libmudflap*</primary>
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306 | </indexterm>
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307 | </listitem>
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308 | </varlistentry>
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309 |
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310 | <varlistentry id="libquadmath">
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311 | <term><filename class="libraryfile">libquadmath</filename></term>
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312 | <listitem>
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313 | <para>The GCC Quad-Precision Math Libarary API</para>
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314 | <indexterm zone="ch-system-gcc libquadmath">
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315 | <primary sortas="c-libquadmath*">libquadmath*</primary>
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316 | </indexterm>
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317 | </listitem>
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318 | </varlistentry>
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319 |
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320 | <varlistentry id="libssp">
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321 | <term><filename class="libraryfile">libssp</filename></term>
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322 | <listitem>
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323 | <para>Contains routines supporting GCC's stack-smashing protection
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324 | functionality</para>
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325 | <indexterm zone="ch-system-gcc libssp">
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326 | <primary sortas="c-libssp*">libssp*</primary>
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327 | </indexterm>
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328 | </listitem>
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329 | </varlistentry>
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330 |
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331 | <varlistentry id="libstdc">
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332 | <term><filename class="libraryfile">libstdc++</filename></term>
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333 | <listitem>
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334 | <para>The standard C++ library</para>
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335 | <indexterm zone="ch-system-gcc libstdc">
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336 | <primary sortas="c-libstdc++">libstdc++</primary>
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337 | </indexterm>
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338 | </listitem>
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339 | </varlistentry>
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340 |
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341 | <varlistentry id="libsupc">
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342 | <term><filename class="libraryfile">libsupc++</filename></term>
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343 | <listitem>
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344 | <para>Provides supporting routines for the C++ programming
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345 | language</para>
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346 | <indexterm zone="ch-system-gcc libsupc">
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347 | <primary sortas="c-libsupc++">libsupc++</primary>
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348 | </indexterm>
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349 | </listitem>
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350 | </varlistentry>
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351 |
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352 | <varlistentry id="libtsan">
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353 | <term><filename class="libraryfile">libtsan</filename></term>
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354 | <listitem>
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355 | <para>The Thread Sanitizer runtime library</para>
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356 | <indexterm zone="ch-system-gcc libtsan">
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357 | <primary sortas="c-libtsan">libtsan</primary>
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358 | </indexterm>
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359 | </listitem>
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360 | </varlistentry>
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361 |
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362 | </variablelist>
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363 |
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364 | </sect2>
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365 |
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366 | </sect1>
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